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多壁碳纳米管/埃洛石纳米管增强热响应形状记忆聚合物纳米复合材料的力学性能及形状恢复特性

Mechanical and Shape Recovery Characterization of MWCNTs/HNTs-Reinforced Thermal-Responsive Shape-Memory Polymer Nanocomposites.

作者信息

Namathoti Sivanagaraju, Vakkalagadda Manikanta Ravindra Kumar

机构信息

School of Mechanical Engineering, VIT-AP University, Amaravati 522237, Andhra Pradesh, India.

出版信息

Polymers (Basel). 2023 Jan 31;15(3):710. doi: 10.3390/polym15030710.

DOI:10.3390/polym15030710
PMID:36772011
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9919569/
Abstract

Mechanical and shape recovery characteristics of thermal-responsive shape-memory polyurethane (SMPU) reinforced with two types of reinforcements, multiwalled carbon nanotubes (MWCNTs) and halloysite nanotubes (HNTs), were studied in the present research work. Three weight percentages of reinforcement (0, 0.5 and 1%) in the SMPU matrix were considered, and the required composite specimens were obtained through injection moulding. Tensile, flexural, impact and shape recovery behaviours were studied experimentally. Further, flexural tests were performed for multiple cycles to understand the specimens' flexural strength variation after shape recovery. The concentration of both reinforcements (MWCNTs and HNTs) considered in the present study significantly improved mechanical properties and shape recovery.

摘要

在本研究工作中，研究了用两种增强材料（多壁碳纳米管（MWCNT）和埃洛石纳米管（HNT））增强的热响应形状记忆聚氨酯（SMPU）的机械和形状恢复特性。考虑了SMPU基体中三种重量百分比的增强材料（0%、0.5%和1%），并通过注塑成型获得所需的复合材料试样。对拉伸、弯曲、冲击和形状恢复行为进行了实验研究。此外，进行了多次循环的弯曲试验，以了解形状恢复后试样的弯曲强度变化。本研究中考虑的两种增强材料（MWCNT和HNT）的浓度显著改善了机械性能和形状恢复。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/66846ff145d5/polymers-15-00710-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/7b8811a982b0/polymers-15-00710-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/51c480910d8f/polymers-15-00710-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/f978c9fb1dfb/polymers-15-00710-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/194f64b86b72/polymers-15-00710-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/526532917090/polymers-15-00710-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/170ef78e22e8/polymers-15-00710-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/09a46450e771/polymers-15-00710-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/d482da5b1e8b/polymers-15-00710-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/d8d4221f1f70/polymers-15-00710-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/18fbca5fcfe7/polymers-15-00710-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/94574e75a494/polymers-15-00710-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/1a8d42dc926e/polymers-15-00710-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/c318118b3c5f/polymers-15-00710-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd6/9919569/66846ff145d5/polymers-15-00710-g014.jpg

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